Oil burner



Feb. 20, 1923. 1,446,690

R. HOFFMAN OIL BURNER Filed July 12, 1919 2 shejts-sheet 2 30 v V 45 tomove-the fingers in Patented eb. 1323.

00;, oF cHIcAGo; I-LLmoIs'; a.ceiano tarrron ori miwmcsm.-

v o n BURNER i f Application meal-Ju 12,

To all whomz't mcz y c ancemz:

1 Be it; known thaw, RUDO PH IIOFITMAN a citizen, of. the United;States, residing at Kankakec in. the county of Kankakec and State ofIllinois, have invented certain new and,usefulImprovements= in OilBurners of which. the following is a specification.-

The invention relates to blue flame oil bun, ners. and has forits-object the provision of a burner oil-high efficiencv. involvinganimprpvedarrangement of the combustion tubes for. facilitating, thelighting operationyand for preventing. oil from creeping-from the Wickonto the combustion tubes; and also including the provision of, animproved wick stop device carried ,a wholly? by the inner comebustion-tube s0. as to'be removabletherewith as a unlt',andthemprovislon of means for form an 0i1;.trough, .in.the.

' facilitating the removalof. char-red portions ofthe-wiclev i g I Inthe. accompanying drawings wherein I have illustrated a preferredembodiment of the iuvention,.Figure l; is a side elevatioii of theimproved burner. Fig; 2 is a horizontal section-itakenin, the plane ofline 2-2 of Fig, 3.. Fig; 3 is. ai -Vertical sectional view through theburner takem apprbxia v matelv in theplane of l i11e:3-3 of Fig. 2L Fig.liis afragmentary detail view showing theconstructikm ofthe means forsupport,- ing the. outer combustiontubefl v Figs. 5 and are fragmentarydetail-"views. showing-one form of Wick scraping. means. Figs-7 and 8are similar viewss sho'wingv another form. of wick scraping means/JFigs: 9 and 10 are detail views showing a modified form of wick stopdevice. l Consideredv generally, the burner comprises the usualconcentric wick tubes land 2-spaced apart to-receive-a-wick 3 anioutefcombustion-tube 4 adaptedgto be seated upon the outerwick tube. 1*,- andan inner combustion tube 5. .6 indicates a -rodby means of Which thewick stop device includingaa series of stop fingersq 'i"is m'anuallyepel-able to and out ofipositionlaboverthe wick.- v v 1 The wick tubes.-l. and 2 suitable construction being relation and closed; at their maybeofeany' held in spaced, lower ends to usual manner., The outer tube 1carries the usual wick rais- I ing, and lowering; device 8 for the wick3, and near the. upperrend of said tube .there is provid ed-an outwardlyextendingbead-9 which-"arms if Se-4 f reg-thefuse; .c m

-pe de uy tthg.inner-e0 atitslc werf'endi's provided'z with'an'annularthe outer wick tube 1.

tance beyond the ve1 ticalfplane of the: "outer pins are .mounte'd uponthe outer; W" vic 't I. iw uin-"1" dv are-else. equidisconvenientl1919.; Serial. Nb ;:31o,429. 7

tion vtube When'in normal dr opemt The wascommun cate of ordinar .".c on1;rution; (is I QVable. indes s'fimi', il-b ia ill member .10. adapted I.tocooperate" wit l'lefi Qf stationaryfpinsf 11 to; supp tube in raisedpositionfwit-h refere b'erisfiXed upon the out-erperiplierj M b d 1 $dbwva dl -a dbut 'alt ly sovasto carrygatits lcweriedge a. s rtdifs hich we.0

. Said. annular m'f i wicktube, a;seri'e cf"depending,porticns r apartand a e pr0 vic'le d with central not h s ecelvin'g the I Elli SL1 'j f111 ny su table way; an

tantlyspacedfapartl' The, pa1'ts are so l I 6 less. r iapbr franged thatwhen th upon the pins the c0mbustion tube 4 is sup-f aidd po'rted inra1secl'ipqsition with its lower end i s b ant al when the lugs aremoved fofl with: the ,latter' engagin member; 10 between "adjacent,lugs, the lower edge" of] the, conwibustioiii tube-.restsjin; iojw jered or ioperat TOP per of: tubeAi into either raised on; 1011 theopposite edges of the lugs re n- 've positiojn iupon its fseat' ly: Y mment-O he clinedTas-atM so-that it isi only ees's'aryit handle 15 shoud). Itv will. be seen that the; const tube .israised not on p le"andthatwhenmhe ,1

ventfd from creepinwup onto thelfcdmbusf- I tion tube hem" tl'lGrWl anySide f he urner.

I The inner combustion 'Sji iof wick tubel2 and is normally; .firxevertical movement;

r I c1; 3,;lblut ready access .t0,the.,.wick is permittedi from'practically top 16 anclatits' lowerend. haisagtubulai: ex-" tensionffi,dependiimginto'theinnerwickftubc;

which is of a diameter To hold the combustion tube 5 properlyspaced'withreference to the inner wick tube, the tubular extension 5 isprovided with a series of raised portions orbosses 17. By reason of suchspaced relation of the inner combustion tube relative to the inner wicktube, oil is prevented from creeping onto the combustion tube. j V

The means for supporting the combustion tube 5 comprises a tubular stem18 mounted centrally of the burner upon a cross bar 19 suitably securedto the lower ends of the wick tubes 1 and 2. Near its upper end saidstem is shouldered to form a scatter a washer 20 anc lltheextreme upperend thereof, which is adapted to be passed up through central aperatureprovided in the top 16 of the tube 5, is threaded to receive a wing nut21 fixed against turning as by. means of a key :21. The wingnit servesto clamp the top sutiiciently loosely upon the stem to permit or therotationiot the combustion tube relative to the stem tor a purpose to behereinafter set forth. it its lower: end, the tubular sten': isfinternally threaded to receive a po "ed screwthreaded stud 22 carried bythe bar 13. It will be apparent that the inner coinbustion tube 5 issupported wholly by the stem 18 and may be readily removed when desiredas for the purpose of removing charred portions ot'the wick which mayhave accumulated the annular space between the inner wicktuhe' 2 and theinner combustion tube 5. 4 I

wperable within the upper portion of the tubular stem 18 is theoperating wick stop device. At its lower end this rod is fixed-to aninverted frusto-conical member 23 which is adapted when operatedvertically by means of the rod 6 to control the positions ofthe stopingers 7. A plurality of said fingers are provided, being enteredthrough. openings provided in the wall of the inncr'combustion tube ashort distance above'the upper ends of the wick tubes and spaced apartsubstantially equidistantly throughout the circumference of sziidcombustion tube. v@aaid fingers are" herein formed integrally with. theupper ends of a plurality or? spring arms 24 connected at their lowerends by means of a ring 25 somewhat less than the diameter ot the inner.combustion tube.

' To permit of the passage of airupwardly into the upper portion 0'? theinner combustion tube the sidewalls of the conicatmemher 23 may beperforated and it is also provided with a perforated top wall 26. Upon Ithe under side otsaid top wall is suitably secured" across bar 27'intowhich bar is screw-threaded the lower end 01"? the operating rod 6 whichis also provided with a lock nut 28 to prevent it from' unscrewing. Toaccoin'z-nodate said bar the stem is provided in opposite sidescentrally thereot with a rod 6 of the mes es pair of slots 29 (Fig. 2)of a width adapted to neatly receive the bar. Said slots are made ofsuiiieient length to permit of the operation oi, the conical member 23by means of the rod Thisrod may be provided at its upper end with afinger loop 30 for convenience in manipuiating the same.

The parts are so arranged that when the iii-ember in. its uppermostposition the stop fingers arms 2%. in their innermost position, theinward movement thereoi being limited by upt 1 ed line es 31 n the outerends of? the h..- :1 d to engaoge with the wall of the coin ustion tubeadjacent the openings therein 411.3 fingers; and when the member isforced downwardly into the position shown in dotted lines in Fig. l, thetin.- ge s moved radially outwa ,dly over the wiclr against the actionoi the spring arms For holding the member 23 in its raised position. supp r peripheral edgeis adapt-v ed to .L 3 groove forn'ied between pairof needs Th s is the norsirable attrithe stop rs 7 have served the rpurpose in positioning the wiclr to cause them to be withdrawn out oi"the flame 0'? the lighted wiclr. in '9 and 10 however. I have shown aterm of wick stop device in which stop fingers 7" are immovablelaterally with reference to "the inner combustion tube, being; formedintegral witha ring) fix; upon the outer periphery'ot the combustiontube.

. horse, aping the wick to remove charred portions thereof, the stopfingers may also be employed, it beinq only necessary to bring; thei andthe wick 3 into operative association and rotate the inner combustiontul such rotation possible byreason oi the tact that the top 16 oi thetube is clamped between the washer 20 and nut 21, as abo e set tortb,with cient looseness to permit oi its rotation relat ve thereto. Suchrot able mounting; of? the inner cor...- bi tion lube also per 'ts 0tchange trom time to time of the positions oi the stop fiir gers withreference to the wiclr. this being: parsimilarly advantageous in Case ofthe stop which since they conltantly verlie ire wiclr, tend to cause anline-ye fining; thereo it their positions are never changed. 7

In order to more effectively remove the charred portions or the wickthan can be done by the stop fingers 7 or 7 l' pre'ier to employ ascraper especially adapted for this purpose. In Figs. 5 and 6 I haveshown a scraper 34: having two angularly disposed llpl'i t. wallsprovided at their ends with securing flan s whichmay be riveted to thesidewalliof the inner combustion tube 5: and in 7 and 8,1 have shown ascraper 35 havingonly one angularly disposedwall scope ofv theinvention.

' tion. tube having a central tion with a pair of concentric ihaaoao 1It will belseen. thatI have produced: of a thoroughly practicalcharacter,

burner. V Bothcombustion tubes may be supported 111 a manner. toefiectively prevent, the creepage thereontoof oil. from the wickg. theouter tube may be readily. manipulated to facili tate the lightingtions; the Wick stop devicemay bequickly and easily operated toposition.the stop fin-" gers in their operative.orflinoperative positions, as maybe desired; the charred portions of the wick may-be easily and efieotively. removed. therefrom; and the parts may be readily disassembledWhen desired for purposes of cleaning'or repair. a

While I have. herein illustrated and scribed myinvention;Withfconsiderable particularity, Irecognizethat variouschanges may be'made,inconstruction and arrange ment Without. departingappended claims. I claim i 1; An oil burner tion with'a pair ofconcentric an outer combustion tube, an inner combusand provided with. apluralityloi'lopenings adjacent] the upper end of the inner Wick tube, aplurality of spring arms hzi-vinglats era-lly extending fingersprojecting through said openings in the inner.combustiontube,

and; a frusto-conical member guidedi-for vertieal movements by saidstemand adapted to move said fingers outwardly against the action of saidspring arms. p

An oil burner comprising, in combinaan outer combustion tube, an

tion tube having a central tubular'stem,'. a transverse member carriedby tube and adapted to support said stem, a plurality of Wick stopfingers movable radially With reference to said inner combustion tube, a'frusto-conical member adapted to operatively engage said fingersandhaving a cross bar, said stein being slotted to receive said crossbar and to permit of its vertical movement relativethereto, andanoperating rod for said conical member pass-' mg through said stem andsecured to said cross bar. v

3. An oil burner comprising, in combination With a pair of concentricWick tubes and an outer combustion tube,an inner combuse,

tion tube having a central supporting stem rigid with reference to saidWick tubes, a

removed by simply rotating and extinguishing operade-g from} the spiritand as expressed. in, the

comprising, incombinawick tubes and sun ortin stem 1 n I (D the lastWick tubes and inner combusthe-inner Wick ick stop member plurality ofvvick.stop fingerscmovable-ira tion tube, and a frustoconi-ealmembermovable vertically -W saidwvick'tubes: 1

e. An oil burner ha ving, Wlllll afl-pa1r of concentric radially movablefingers an'dineans for moving said fingers ncluding I a frusto-conicalmember and, an operating rod thereforsexi 1 tending upwardly throughcthe-inner. come,

bustion tube..- 1 m 5. An oil burner, havingfin combination with. a pairof concentric combustion-f tubes, a wick stop device comprising a.radially ex: tending finger and operative position, comprising a.member:

' dially "with. reference to said ll111QLf;-(;OIIlbtlE ith;referencegto.said stem andadapted tocentrol thepositionsot'said.70 Ifingerswith' reference to a'QWick 'cariiedby'= in; combination-,coinbustion.itubes,

a ick stop I device comprising a. plurality of means for moving said Pfinger While the inner combustion tube sfin adapted to islidably engageWltllu, saidizfins i said member and: thereby said finger, I

6. An oil burner having, in combination, an inner combustion tube, a.wickl ger, and a rod operable manually to. move gerj movable radiallyof-saicLt-ube, andaneans, a."

for moving saidfinger; comprising, a .verti-e cally movable "memberfrictionallyengage p in one position of; the whereby-the] member is .1held; in v ing with. said tube. member,

suchposition.

a pair of concentric Wicktubesradapted to receive a. Wick therebetiveenfor, vertical 111g the vertical movement of the ;'wick,f's aid (.In' anoil burner, the combination with 1.0.0 movement, of a Wick stopdevic efor. Inuit 1 device comprising a. finger-*movable:radially Withiespectto .saidtubes, means for iactiuatingsaid finger into and-out of positionover the Wick,

including a member-slidably enga'g; ingthe fingeryandmeans f mentionedmeans in position. I fijw 1 1 In an oil burner, the combination with.

r5- maintaining its inoperative .110 a pair of concentricWick'tubeshaving a Wick movable longitudinallyftherebetween, of

means operable from Wick whereby to limit the .upward 'movementmentioned means including a member adapt- I a positionat one side oftheWick to an operative position" over the 115 thereof, and means foractuating the last.v

ed to frictionally engage. the same whereby j to hold the firstvmentioned means in oper-,

ative position and means tor -moving said" member.

- 9.5111 a-blue flaine'oilbu'rnerthe combina tion with a verticallyinovable' Wick, of a operative position With; respectto said'wick,

a pair of combustion tubes mounted concen- :ftrically with respect toeach other andsaid ick, and meansextendin'g upwardly'through one of saidsa d member.

movable into-and outiof f combustion tubesv for actuating i combinationwith a vertically movable W I a Wick stop dev ce comprising a stopfinger 10. In an oil burner, the combination with a 'ertically movableair ilar Wicn, movable cam member located concentrically of said Wick, aplurality of iviclr stop devices located between said cam member andsaid Wick, and means for moving said cam member into and out ofoperative engagement with said ick stop devices whereby to effect theirmovementeither from an inoperative position at the inner side oi theWick or to an operative position over the wick.

11. bluelame oil burner having, in comb 4 tion with a vertically movableWick,

a Wic stop device CO'LPJYISHEQ a stop finger, a vertically movablemember, and means tor operating said member to more the outw *dly, saidmem iier being adapted to frictionall hold the linger in its outer posiamil rune burner having, in r 7 w "v "1. l 7 r b a 1 crnoina ion men aleruicalg I301. re A10 5, a wick stop device comprising a stop finger, avertically nn'zvable member to "1e finger, and a pull-rod for operatingsaid member;

A blue-flame oil 1 fllllll'dll' having, in

15.111 an oil burner, the combination with a vertically movable annularWick, a wick stop finger movable into and out of the path OfHlOYGYIHGIltof said Wick, a vertically movable member having a sliding engage mentWith said finger to actuate it, and means i ,e ieoeo said memberincluding a cenn1 inber disposed coaxially oi. connected With said foroperating trai actuating e inch and operatively it). in an oilburner,the combination or an annular \vicl; mounted tor up and down movement, acombustion tube operatively associated with said Wick, a Wick stopfinger movable radially with reference to said Wick saidtube intoand'out of the path of movement of the Wick, and means for actuatingsaid finger including a member havin Sllfillfi cam en agement with saidtin--v D b L] and a member extending longitudinally through saidcombustion tube beyond one end thereof and having an operativeconnection with the first member.

17. In an oil burner, the combination oi an annular. Wick mounted for upand down moveniient, combustion tube operatively associated with saidWick, a Wick stop finger movable into and out of the path of up and downmovement of said wish, a cam member adapted to operatively'engage saidfinger to "note it, manuallg operable means for acating said member, andmeans for holdsaid member in inoperative position. I

In an oil burner, the combination of an annular wick mounted movement, apair of spaced concentric con1- bustion tubes operatively associatedWith said sick, the inner one of said tubes being stationary and theouter one of said tubes being movable to permit oi access to the Wick, aWick stop fingermounted Within the inner combustion tube, the latterhaving an opening therein through which said finger is adapted toprotrude into the path of movement of said Wick, and cam means forengaging said finger to move it.

lln testimony whereof, I have hereunto set my hand. I

RUDOLPH HGFFMAN.

for up and down.

